I just did a search on Ancestry, and it seems to have been used primarily as a male name, but there is one Sendeniah Sarah Day/Alcock.
http://search.ancestry.com/cgi-bin/sse.dll?gl=allgs&gss=sfs28_ms_f-2_s&new=1&rank=1&msT=1&gsfn=Sandeniah&gsfn_x=0&MSAV=0&cp=0&catbucket=rstp&uidh=2v8
Sandenia, spelled without the h seems to have been used more as a feminine name.
This message was edited 10/28/2015, 6:34 AM